Electronic Taster Has A Nose For Coffee

An "electronic taster" for coffee has been developed by Swiss researchers. The food industry regards machines like this as essential for good quality control. Coffee presents a real challenge; roasted coffee aroma is composed of more than 1000 volatile organic compounds.


(From Coffee tasting machine diagram)

The researchers started by having a team of ten trained human taste testers go over a set of samples, and assess the taste and aromatic qualities of the coffee. The espresso coffees selected for this study were blended mainly from different Arabica varieties with some Robusta. They used a Quantitative Descriptive Analysis, consisting of nine aroma and two taste attributes scored on a scale ranging from 0 (not intense) to 10 (very intense) for each product by monadic sensory evaluation. They expressed their judgment in terms like roasted, flowery, woody, and toffee.

The researchers created a device that would heat a sample of espresso and then analyze the gases released by monitoring the headspace over the device. The chemical information was then translated into the taste qualities used by the human judges. The result for each sample was a unique profile (see profiles below). The red colored outline represents the results of the human testing.


(From Coffee tasting machine sample profiles)
-red colored outline represents human test results-

The coffee-tasting machine research will appear in the March 1st issue of ACS' Analytical Chemistry.

Science fiction writers have been thinking about machines with a sense of smell for a long time. In his classic 1953 novel Fahrenheit 451, Ray Bradbury created the chilling mechanical hound that guarded the fire station:

Nights when things got dull, which was every night, the men slid down the brass poles, and set the ticking combinations of the olfactory system of the hound and let loose rats in the fire house area-way. Three seconds later the game was done...
(Read more about Ray Bradbury's mechanical hound)

Another attempt to visualize sniffer robots and assign them a practical task is found in the 1985 movie Runaway by Michael Crichton. In the film, detectives use a four-legged sniffer robot to find and identify trace compounds at a crime scene (see Crichton's sniffer robot from Runaway).

If you have a nose for this sort of news, read on:

From When Machine Tastes Coffee: Instrumental Approach To Predict the Sensory Profile of Espresso Coffee [pdf] via Eurekalert.

Scroll down for more stories in the same category. (Story submitted 2/21/2008)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 2 )

Related News Stories - (" Food ")

BlueNalu Yellowtail Might Be Your First Lab-Grown Meat
Vat-grown nigiri sushi?

Beijing HaiDiLao Robotic Hotpot Restaurant Now Flavored By Artificial Intelligence
'Kantos Kan led me to one of these gorgeous eating places where we were served entirely by mechanical apparatus.' - Edgar Rice Burroughs, 1912.

Plants of the Future - What Should They Be Like
'He almost choked in his astonishment. Mashed potatoes and brown gravy!' - Robert Heinlein, 1941.

Uber Eats Pairs Cars With Drones
Fresh grub? Let's hope they aren't delivering grubs.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

Sci-Fi Helps Young Readers Build Resiliency
'Reading science fiction and fantasy can help readers make sense of the world.'

I Want My 1928 Telestereo Hologram Now
'Instantly there appeared standing upon the disk, the image of a man...'

Memes Now Come From Neural Nets
'Your order said for him to be able to be able to work out twists on the gags in the file...'

Robot Dog Learns To Be Doggy From Real Dogs
'So we took pictures of Guzub making a Three Planets, and I could construct this one to do it exactly right down to the thousandth of a second.'

Unwanted Cruise Ships Huddle Together Out At Sea
'On the screen they passed in an endless, boundaryless flood of green specks...'

Sono Sion Electric Car Charges As You Drive
'It drew its power from six square yards of sunpower screens on its low curved roof.'

News Mood Filter Web Extension
'He adjusted the n, the r and b knobs, and hopefully anticipated a turn for the better...'

Fetal Lamb Rests In Artificial Womb
'... stewing warm on their cushion of peritoneum and gorged with blood-surrogate and hormones, the foetuses grew and grew...'

MIT Wants To Catch Interstellar Visitors
'INVESTIGATE MYSTERIOUS OBJECT ENTERING NEW CALEDONIA SYSTEM FROM NORMAL SPACE'

AutoX Sets Up Asia's Largest Robotaxi Center
'The robot cab seemed to know where it was going and, no doubt, the master machine from which it received its signals knew.'

E - Ink's Automatic Self Styling Color-Changing Dress
'The racks of gowns itched and quivered, their colors running into blurred pools.'

Soft Robots Use Kirigami Piezoelectric Sensor Skin
'A worthy opponent was the golem.'

Bosch Smartglasses Laser Paints AR Image On Your Retina
'Soon we'll be testing a system that projects directly on the retina of the eye.'

Maybe We Could Hibernate Until The Covid-19 Pandemic's End
'Cold-rest was a common last resort therapy for functional psychoses.'

Workplace Monitoring Hell, I Mean, Tool For Safe Distancing
'And here is the weirdest part -- I never see another employee the entire day.'

Patent Office Says AIs Cannot Be Inventors
'The real smart ones are as smart as the Turing heat is willing to let 'em get.'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.